deckert's blog archive for February, 2008 - RC Groups
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Archive for February, 2008
Posted by deckert | Feb 28, 2008 @ 01:16 AM | 4,062 Views
Overall I pretty much like this plane for an arf build. However, the darn wing didn't want to go into the fuse. The CL of the wing root is just a hair longer then the fuse cutout. A little twist & push got it there tho. What really bothered me was Hyperion wants the wing epoxied to the fuse. WTH? The front tab & 2 screws make this rock solid so why would I epoxy it?

So here goes some more mods. I'm NOT attaching the wing per directions. No mods to the wing but have to mod the bottom cover plate. So I added, via epoxy, 4 aluminum pins to the front of the bottom plate that fit into holes drilled into the fuse assembly behind the LG. As this bird is a known culprit for weak LG, & LG framing, I'll have to beef up the fuse framing above/around the LG framing. I did add a little piece of balsa into the bottom plate to help hold the 4 epoxied pins.

Everything fits like a dream and the bottom plate is tight to the wing. I'll have to either velcro this on or use some magnets for retention at the rear of the bottom plate. Either way will require a little balsa to offset the gap between the trailing edge of the wing & the bottom plate. BTW, I bought some Dubro wheels to replace the chintzy Hyperion wheels. At least they roll straight.. Unk if I'll install the wheel pants, although the new wheels will fit inside of them with a 'little' trimming. On the downside, the wheel pants are crappola because of the glue lines.. pretty ugly! Maybe paint, I don't know yet.

Posted by deckert | Feb 25, 2008 @ 11:41 PM | 3,848 Views
Yea right! I read-em & forgot-em. Just this close to a MAJOR foo foo! Test fit the elevators to the horiz. stab & epoxied the cross wire into the elev. STUPID! For some reason the elev. just wouldn't go thru the tail slot, gee, I wonder why. Epoxy (5 minute) hadn't fully set so I got 1 side loose & managed to get everything like it should be. Panic setting in upon realizing stupid mistake. I hope this won't be relative to my motor mount experiment with this bird. I seriously thought about running dual servos for the Elev so I didn't have to deal with the tie-rod. What's another 30 or 40 bucks..

Motor mount hold down is very tight with this mod I'm trying. I'm unable to pop it up to release it with a 'lot' of finger pressure. I'd break something before it releases so I'm feeling pretty good with this. Still need to epoxy it though. However, if you see some later blogs with a lot of sniveling & crying about me crashing because the whole motor went a separate direction then the bird, well? Bad bird Bad bird, whatcha go do when they come for you? (sung to the tune of Cops)

Posted by deckert | Feb 24, 2008 @ 01:55 AM | 3,956 Views
Ya ever wonder why we JUST HAVE to mod things? Me neither! For whatever reasons, I started my Hyperion Cap 232 25e today. (Sorta/kinda, as I spent about 3 hours the other day ironing out the wrinkles. ) I'm inclined to agree, since I asked the question about the wrinkles, there must have been too much heat/storage/something that induced a HORRIBLE amount of wrinkles into this bird. Anyway, ailerons are ca'd on. Moved to the engine mount & here's where the changes start. I looked @ this thing for over 2 hours and decided I had no desire to epoxy the motor mount to the firewall per directions. Reason being, after minor crashing other birds, I usually tear up the motor mount. If it's epoxied in, my firewall usually takes a hit as well and it just creates a lot of headaches for repairs.

SO I decided there must be a better way. I guess a test crash will tell, heaven forbid I need to validate this. Fortunately, Hyperion made the motor mount 'tablock' into the firewall. So drawing on my years of industrial construction, I decided to make the motor mount removable in case I dump the bird. I think the pics will relay better then I can describe it all.

End point being, remove 2 bolts & the entire firewall w/ motor can be pulled. I added reinforcing plywood plates behind the 4 blind nuts. I have no fear of this coming loose. It will pull/hold @ least 5 lbs of down-force to hold the motor mount into the firewall with the tabs set tight. I still need to add some epoxy...Continue Reading
Posted by deckert | Feb 17, 2008 @ 09:05 PM | 3,527 Views
Well I maidened (again?) the TC today. All was successful. Spent about 6 minutes up. 45 degrees and about 5~7mph winds @ the start. Winds started picking up so I brought her in & greased her down for a beautiful 3 point downwind landing. A no-no but.. After rebuilding from the 1st maiden I turned everything on & "discovered" why I dumped her in the 1st place. I had the Ail servos reversed. How I managed that is beyond me. Stupidity reigned I guess. Left wing rebuild was 2 wing spars, 3 ribs and virtually the whole motor mount. Recovered the beautiful Cream Cote with Maroon accent damage with Cub yellow. Talk about UGLY! Wife is ticked off because she didn't get to see the voyage, oh well.. I also bent the motor shaft but not bad enough to ground it, new one is on order. Dang. Also had to re-spring the landing gear.

Old age has some some problems. Gettin out there about 300' and I'm not real sure "which" direction the bird is at, although a lot of elevation helps I did add +3 up to the right ail to get rid of the roll because I can't get rid of the left ail warp on the upper side. Will need some down trim on the elevators because the bird wants to climb. Running this with a 10x8 woody prop with a 450 E-Flite outrunner. There is a lot of speed with this. 1/2 throttle & the bird must be doing 25~30 mph in level flight. 1 loop tho and the bird kinda fell out of the sky, but the bird was quite a ways out there. I'm sure it was lack of airspeed. The old age vision thing again. Damn it's hard gettin old!

Posted by deckert | Feb 16, 2008 @ 01:43 AM | 4,678 Views
FINALLY, calm day & cool here. Take my new TaylorCraft for it's maiden. Oh Yea!
Now add a left turn after lift off (120' or so out @ about 15' AGL) and keep turning left with a little left roll before the bird was trimmed. Was rolling slightly to the left due to warped Ail that I didn't catch b4 the flite.

Kerblam Dumb thumbs won out! Left wing is rebuilt, and now redoing the motor mount. Bent the prop adapter but not the motor shaft. The Cub yellow monocote sure makes the wing look like.....well, ugly! LOL
Some work ahead I guess.. Gonna hafta fly less 1 ea. left wing strut. Point being, the ground was a virgin until I got there.

Posted by deckert | Feb 15, 2008 @ 03:19 PM | 4,065 Views
NP (NitroPlanes) sent me a msg offering an RMA on the bipe of which I'm going to accept. Kudos to John from NP (NitroPlanes) for their service.

opjose,(RCU frequent poster) and others, have been very useful with respect to advice/suggestions on this plane. In fairness to trying everything offered up to help, I tried the final thing I could think of to obtain CG. I offer this up as information only.

I installed dead weight into the battery tray area to obtain CG. Nothing was placed past the first former located behind the firewall nor was anything placed ahead of the firewall. All electronics were in place. The end result was 1lb.~1.1 oz of dead weight to obtain CG @ 50mm mfg specs. The battery pack I was trying to use weighs in @ 6.3 oz. I think the posted pics will put to rest any questions or suspicions anyone may have.

Posted by deckert | Feb 13, 2008 @ 01:56 AM | 3,687 Views
Right or wrong, things just don't go right no matter how hard you try. My NitroPlanes Ultimate Bipe has got to go. If it wasn't for the cost of the electronics, I'd wind this bird up & set it loose on the world for some other poor unsuspecting sole to 'discover' in a field someplace. AUW measured @ 27.6 oz after the build. Perfect! Unfortunately, the AUW is mostly in it's ass end.

I guess the pics with this will tell all. I didn't weigh the added lead I used to try for getting CG, but the bird feels like a sack of potatoes when you pick it up after adding the weights. The weights pictured are 5/16" od and total 20" in length. FWIW, a couple of short taxis's (60' total) tore the rear TW off & bent the wire off the rudder. (before adding the weights) If you look close @ the broad side images of the bird, you can see where I replaced the tw with a 2" wing tip skid. 60 feet of asphalt ate a 1/4" off of it in 4 runs of taxi @ 15' each way. I have to clarify, I installed an EVO 25 battery into this. It's a little longer then what I should be using, which doesn't help the CG. I'm estimating (real close) about 20% of it sets behind the CG But without scaling the added weight, this bird, IMHO is just plain tail heavy. I vindicate this because I've read the same results from other builders of this bird on other NG's that are looking @ CG of 5~10mm behind the factory recommendations. Unfortunately, my CG is 25mm past factory with no weights added. (...Continue Reading
Posted by deckert | Feb 06, 2008 @ 02:40 AM | 3,656 Views
In all fairness to NP, my gripes about the bipe were answered today by the owner of NP. He asked for my order number so I could send it back for a full refund. No matter what I think of the kit, the offer was something I believe we would all look for from a vendor. Kudos to NP from this respect. It indicates they're trying hard to please.

I mailed NP back and politely declined as I'd already modded the bird & was to far along into the assembly with mods to be able to box it. I also made note NP support has failed to make amends with respect to their price guarantee, much less respond. So I guess I'll see where that winds up. This bird is cute & the covering is pretty darn good, but it doesn't offset the poor quality nor design of the kit. Try stuffing a battery into this bird & be able to lock it down with no mods Would I order from NP again? I honestly don't know. It's a balancing act between "if you're not satisfied return it vs quality". I strongly believe quality will overide "if you're not satisfied"

I'm going to keep looking for another bird of this type & size for building because I love the fact they should be little hot rods & still fit in the front of my pickup. The NP Ultimate bipe fails for quality but is long on looks. IMHO I just dislike models out there with exposed servos. This bird will be a thrasher & I'm hoping to recover the electronic gear in the end.

Posted by deckert | Feb 05, 2008 @ 03:46 AM | 9,262 Views
Let me start out by saying you get what you pay for. To that end, I guess I bought junk and ultimately received junk. Albeit I never expected perfection per se, I was totally blindsided by the utter lack of ANY quality from this purchase from Nitro Planes. I inspected everything thru the packaging before I ever started this build and it 'looked okay'. Woe was me after opening and start building.
1. NP apparently won't stand behind their web site ads. Specifically, they've NEVER got back to me regarding their 'price match guarantee'. (15 days now)
2. The lower wing refused to fit without a major overhaul on the TE to the fuse. The fuse coping profile won't match the wing profile & the wing to fuse screw mount is still gappy because of poor assembly in the frame.
3. The upper wing cabane? mount was pre-assembled @ about a 10~15 degree angle so the upper wing refused to set parallel to the lower wing.
4. The vertical wing struts have mounting holes/blocks you can see to mount the struts in the upper wing. The lower wings have NOTHING to screw to except the covering. NO BLOCKS-NOTHING! You can't see anything because of the covering, unbeknownst to me until I tried a pre-drill @ the set location.
5. The tail wheel wire has no way to secure the tw to it.
6. The pre-installed ail assb. in the lower wing had about 6 degrees of up throw & about 40 degrees down
7. Scotch tape held the pieces together for shipping, (ail/elev/rud) however, I'm assumming this bird was...Continue Reading
Posted by deckert | Feb 04, 2008 @ 12:54 PM | 3,719 Views
After everything, the Cub is finished. If anything, I think it look's even better then the TaylorCraft. Mucho work for putting details into this little thing but no regrets after seeing the final results. Best of all, I got the pics in focus & no shakes. I used a tripod Gonna have to run this over to my LHS so Jeremy can see where my money went

I thought some of you might like to see some old time pics of past Warbirds as well so they're going into this blog as well. Birds are located in McMinnville Oregon, @ the Evergreen Aviation & Space Museum( Stop in if you ever get the chance, it's very impressive. ...Continue Reading